The fuel cost for the train to travel 500 km at the most economical speed is:

(a) β‚Ή 3750 Β  Β  (b) β‚Ή 750 Β  (c) β‚Ή 7500 Β  (d) β‚Ή 75000 Β 

Slide129.JPG

  1. Class 12
  2. Solutions of Sample Papers and Past Year Papers - for Class 12 Boards

Transcript

Question 49 The fuel cost for the train to travel 500 km at the most economical speed is: (a) β‚Ή 3750 (b) β‚Ή 750 (c) β‚Ή 7500 (d) β‚Ή 75000 Now, in our Cost function C(𝒗) C(𝒗) = πŸ‘πŸ•πŸ“/πŸ’ 𝒗 + πŸ”πŸŽπŸŽπŸŽπŸŽπŸŽ/𝒗 Thus, Fuel Cost = 375/4 𝑣 = 375/4 Γ— 80 = Rs 7500 So, the correct answer is (c)

Class 12
Solutions of Sample Papers and Past Year Papers - for Class 12 Boards

About the Author

Davneet Singh's photo - Teacher, Engineer, Marketer
Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.